//
//  VisitorLoginView.swift
//  weibo
//
//  Created by mac on 15/12/13.
//  Copyright (c) 2015年 LYR. All rights reserved.
//

import UIKit

//   定义协议
@objc protocol VisitorLoginViewDelegate: NSObjectProtocol {
    
//    声明协议方法
    
//    用户将要登录
    optional func userWillLogin()
    
//    用户将要注册
      func userWillRegister()
    
}

class VisitorLoginView: UIView {
    
//    设置代理属性
    weak var visitorViewDelegate: VisitorLoginViewDelegate?

//   对外提供设置访客视图信息的方法
    func setupInfo(tipText: String, imageName: String?) {
        tipLabel.text = tipText

        if let name = imageName {
            
//        不是首页
            circleView.image = UIImage(named: name)
            
//        隐藏大房子
            largeIcon.hidden = true
            
//        将circleView 移动到视图最顶层
            bringSubviewToFront(circleView)
            
        }else {
            
//        就是首页  开始动画
           startAnimation()
            
        }

    }

//    动画属性
    private func startAnimation() {
        
//        设置基本动画
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        
//        设置动画属性
        anim.repeatCount = MAXFLOAT
        
        anim.duration = 20.0
        
        anim.toValue = 2 * M_PI
        
//        当动画完毕 或者页面失去活跃状态动画不移除图层
        anim.removedOnCompletion = false
        
//        添加动画
        circleView.layer.addAnimation(anim, forKey: nil)
    
    }
    
    override init(frame: CGRect) {
        
//        调用super.init
        super.init(frame: frame)
        
        setupUI()
        
    }
    
    required init?(coder aDecoder: NSCoder) {
        
        fatalError("init(coder:) has not been implemented")
        
    }
    
//    设置所有子视图
    private func setupUI() {
        
//       添加子视图（背景图片、button、lable）
        addSubview(circleView)
        
        addSubview(backView)
        
        addSubview(largeIcon)
        
        addSubview(tipLabel)
        
        addSubview(registerBtn)
        
        addSubview(loginBtn)
    
//        自动布局
        for subView in subviews {
            
        subView.translatesAutoresizingMaskIntoConstraints = false
            
        }
        
//       设置 largeIcon 的约束
        addConstraint(NSLayoutConstraint(item: largeIcon, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: largeIcon, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1, constant: -60))
        
//        添加圆圈 的约束
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterX, relatedBy: .Equal, toItem: largeIcon, attribute: .CenterX, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterY, relatedBy: .Equal, toItem: largeIcon, attribute: .CenterY, multiplier: 1, constant: 0))
        
//        添加tipLabel  的约束
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .CenterX, relatedBy: .Equal, toItem: circleView, attribute: .CenterX, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Top, relatedBy: .Equal, toItem: circleView, attribute: .Bottom, multiplier: 1, constant: 16))
        
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 230))

        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 40))

//        设置登录 按钮的约束
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Left, relatedBy: .Equal, toItem: tipLabel, attribute: .Left, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
    
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
//          设置注册按钮的约束
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Right, relatedBy: .Equal, toItem: tipLabel, attribute: .Right, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
//        设置背景视图的约束
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[backView]-0-|", options: [], metrics: nil, views: ["backView":backView]))
        
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[backView]-(-35)-[regBtn]", options: [], metrics: nil, views:["backView":backView,"regBtn":registerBtn]))
        
//        设置视图的背景颜色
        backgroundColor = UIColor(white: 0.93, alpha: 1)
        
//        添加点击事件
        registerBtn.addTarget(self, action: "registerBtnDidClick", forControlEvents: UIControlEvents.TouchUpInside)
        loginBtn.addTarget(self, action: "loginBtnDidClick", forControlEvents: UIControlEvents.TouchUpInside)
        
    }
    
    //        按钮的监听事件
    @objc private func registerBtnDidClick() {
        
//        代理调用协议方法   如果是nil  就不会执行方法
        visitorViewDelegate?.userWillRegister()
        
    }
    
    @objc private func loginBtnDidClick() {
        
//       判断代理是否为空 && 是否响应方法  userWillLogin? 表示的是判断是否可以响应方法
        visitorViewDelegate?.userWillLogin?()
        
    }
    
//    懒加载所有的子视图
    private lazy var backView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    
//    大的背景图片
    private lazy var largeIcon: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    
//    圆圈图片
    private lazy var circleView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    
//    显示简介的lable
    private lazy var tipLabel: UILabel = {
    
        let l = UILabel()
        
        l.text = "关注一些人，回这里看看有什么惊喜,关注一些人，回这里看看有什么惊喜"
        
        l.textColor = UIColor.darkGrayColor()
        
        l.textAlignment = .Center
        
        l.font = UIFont.systemFontOfSize(14)
        
        l.numberOfLines = 0
        
        l.sizeToFit()
        
        return l
        
    }()
    
//    设置登录按钮
    private lazy var loginBtn: UIButton = {
    
        let btn = UIButton()
        
        btn.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState: .Normal)
        
        btn.setTitle("登录", forState: .Normal)
        
        btn.titleLabel?.font = UIFont.systemFontOfSize(15)
        
        btn.setTitleColor(UIColor.darkGrayColor(), forState: .Normal)
        
        btn.sizeToFit()
        
        return btn
        
    }()
    
//    设置注册按钮
    private lazy var registerBtn: UIButton = {
        
        let btn = UIButton()
        
        btn.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState: .Normal)
        
        btn.setTitle("注册", forState: .Normal)
        
        btn.titleLabel?.font = UIFont.systemFontOfSize(15)
        
        btn.setTitleColor(themeColor, forState: .Normal)
        
        btn.sizeToFit()
        
        return btn
        
        }()

}







